Automatically-governed carbureter.



o. PFNDER'. AUIIOMATIGALLY GOVERNBD GARBURBTER.

Patented May 4, 1909.

" UNITED OTTO .PFNDEE, or BRUSSELS, BELGIUM.

AUTOMATICALLY GOVERNED CARBURETER.

Specification of Letters 'Ilaten'hY Patented May 4, 1909.

.r Application filed March 25, 1907. SerialNo. 364,334.

To all whom it may concern:

Beit known'that I, OTTO PFNDER, a subject of the German Emperonresiding at Brussels, intheKingdom of Belgium, engineer, have invented certain new and useful Improvements in Automatically-Governed (arbureters, for which application has been \made in l*`rance,.August 8, 1906-; Belgium,

Augusty 10,1906; Germany, August 10,-1906,

and Great Britain, August 11 1906.

lThis invention relates to improvements in Acarbureters and is especially designed/for use in connection with motor vehicles One'of the objectsof this inventionis the provisionlof a carbureter equipped. with means, for controlling admission of the explosive fluid which means also serves to automatically eifect admission of additional air and, in the preferred embodiment,'a supple-- mental supply of airin order to obtain as nearly as possible a uniform richness of the explosive mixture when it is desired to change the speed of the engine andvalso when it is desired to quickly develop additional-power in case of a suddenincrease of s eed, Y

The invention willbe more fu ly described in` connection with the accompanying drawing and will be more particularly pointed out and ascertained in and by the appended claims.

In the drawings z-Tlie figure illustrates a longitudinal vertical section 'of a carburetor embodying the main features of my invention.

lar parts throu hout the. drawing. l

As shown 1 esignates acasing in which is formed a guide'channel 18'. Said channel 18 communicates as shown Awith an annular receiving chamber 2) which delivers to a pipe e -or like connection communicating with t ignition chamber of the cylinder not shown and forms the outletfor the carbureter. As

shown, means preferably in the form of a controller or a throttling plug 3 is provided and is slidablyA mounted 1n the guide channel 18. Said plug 3 is conveniently provided with means preferably. in the form of slots 4 for progressively .admitting the explosive mixture in increasing quantities to the chamber. The normal air sup ly is taken in at 6 and passes the nozzle 5 fl; plosive fluid is atomized or otherwise suppliedfrom any suitable source such for instance as a tank 21. inasmuch as the means for supplying the explosive fluid forms no Like numeralsof reference designate simi! om which the ex? feature of the present invention it need not be described in detail. The plug3 is pro- Vvided with means for effecting the admission of an additional supply of air tothe explosive mixture and as shown said means consists of apertures 7 which are normally closed by a flange 19 ofthe casing 1. ,K Said plug 3 is also providedf/vvith means for' effecting the ad mission or aiilux of a supplemental supply ol' air yto the'explosive mixture and asl shown said means consists of a valve closure 9 which is adaptedto cooperate with ay valve seat'l22 formed in said plug 3. Aperturas 8 formed in the plug;3 provide for the admission of air which is controlled by said valve. The closure 22'is conveniently provided with a stem 10 which )rojectsoutwardly through a guide 23 and'w ich carries on its outer end an abutmentv or shoulder 24 between which and the guide 23 is interposedmeans in the form of a4 spring l1] serving to normally maintain said closure 9 upon its seat and prevent the,..admission of supplemental air. A- shock reducer is provided to prevent hammeringof the closure andas shown said Yref` ducer consistsof'afpiston 12 mounted on the stem10 andiittingthef plug 3 closely. An outletf13 affords a convenient escape for the cusliionlair when the 'piston 12 is returned by the spring 11 after the closure l 9 has been lo ened. Means are provided for connecting t e plug3 with suitable operating mechanism such for instance as agovernor7 not shown, which means consists as shown of an arm 25 formed integral with the casing 1 and carrying on its outer end a pivotally mounted lever 15.

speed the' ex losive mixture is admitted and l) 105 e air supp y is rovided at 6, the mixture passing through s ots 4 into chamber 20 and throu h outlet 2. It will be noted that when the Ip ug 3 is in the position shown a relative y reduced quantity of the mixture is ermitted to pass into thel chamber 20. hen however it is desired to increase the speed the plug 3 is moved-in the direction of 35 Y tion, a veasing :provided .with an outlet, "a

Lthe arrovv a sufiicient distance to open tlie ports 7 and eeet admission of additional air which iningles Witli'the explosive, mixture.

.Such movement of the plug 3V gradually or 'admita supplemental afflux of air through .ports or openings 8. Upon the return stroke of the piston the-pressure iii tlie plug 3 -is restored and the spring 11 returns the closurev 9-t its seat, the piston 12 serving to cushion or retard the movement of the piston 12 and the closure 9 under the action oi'spring 11..

l. A carbureter-comprising iiifcoinbination, a easing' .providedwith an outlet,V a

source of supply for the explosive mixture" delivering tosaid casing, and a controlling y member for limiting the lloW of said mixture lso to said outlet, said controller being provided Witli means for automatically admitting additional air' to said mixture, and' ysaid oontroller beingalsoprovided Witlimeans acting viiidepend'ent-ly of 'said controlle'rfor automat- :ically'admitting supplemental air to said mixture.

2. vAi'earbiireter comprising in combinasource of supply for tlie explosive mixture delivering to 'said casing, and a'eo'ntrolling member :tor limiting the loWrof said mixture y A to said outlet, said controller being provided with means for automatically admitting-'ad- 'ditional air to said mixture, and said'centroller being also provided .With automatically actingiiieans o erated by internal pressure ofsaid controllJer for admitting supplemental air to said mixture. i

, 3.' A carbureter comprising in combination, a easing provided with an outlet, a

source of supply for the' explosive mixture delivering to said casing, anda controller for limiting tlie flow oi'said mixture to saidoutlet, said controller being provided with open ings Vor ports adapted tobe closed by said casing for admitting additional an' to said mixture and said controller beine' also rovided with an automatically acting va ve controlled inlet foradmittiiig supplemental air to saidy mixture. A

4. A carbureter coinpiising incombination, aicasing provided vvitli an outlet,y a source of supply for the explosive mixture delivering to said casing, and a controller for.` limiting the ilovv of said mixture to said outlet, saidfcoiitroller being provided Witli openings or.. ports. adapted to be closed by said casing forv admitting additional vair'to said mixture, and said controller being also provided Witli ports normally unobstructedfor admittin0r su leiiiental air to said c'asin e PP g 70 and an automatically acting valve for oontrollingl tlie admission oi said supplemental air through said ports to-said casing. 4

In testimony whereof l affix my signature in presence of two-witnesses. Y

. OTTO PFANDER lilitnesses S. LARETTE, GREGORY PHE'LAN. 

